Oprah Winfrey believes in sharing the experiences that led her to become the wealthiest woman in the entertainment industry and the first African American woman billionaire. Professor Bill George traces her growth from childhood, focusing on how and when she discovered her true voice and how that authenticity spurred her career success. Cold Call distills Harvard Business School’s legendary case studies into podcast form. Hosted by Brian Kenny, the podcast airs every two weeks and features Harvard Business School faculty discussing cases they’ve written and the lessons they impart. Subscribe on iTunes, SoundCloud, or LibSyn. Listen to an episode at www.hbs.edu/coldcall.